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Finding the Fourth Proportional to 100,851.20, 151,276.80 and 48,363.20

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Solution

The fourth proportional to 100,851.20, 151,276.80 and 48,363.20 is: 72,544.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,851.20 : 151,276.80 = 48,363.20 : x
  2. Step 2: Convert to fraction form
    100,851.20/151,276.80 = 48,363.20/x
  3. Step 3: Cross multiply
    100,851.20x = 151,276.80 × 48,363.20
  4. Step 4: Simplify right side
    100,851.20x = 7,316,230,133.76
  5. Step 5: Solve for x
    x = 7,316,230,133.76/100,851.20
  6. Step 6: Final answer
    x = 72,544.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.